The Murder Case
This assignment was to solve a murder using samples of evidence and forensic science. Forensic science is science used to solve crimes, and can identify suspects. Using forensic science we analyzed fingerprints, learned about karyotyping, DNA fingerprinting, blood testing, pedigree analysis and ink chromatography. All these techniques were used to crack down on the killer, Nancy Normal.
Carleton Comet had invited 5 people out to a picnic, where the sky darkened, and Comet was murdered with a large knife. On the scene, fingerprints were lifted, blood was found, a hair sample, and a note addressing Comet saying "You are a dead man". These samples are studied and explained in the slides below.
Carleton Comet had invited 5 people out to a picnic, where the sky darkened, and Comet was murdered with a large knife. On the scene, fingerprints were lifted, blood was found, a hair sample, and a note addressing Comet saying "You are a dead man". These samples are studied and explained in the slides below.
Content
Forensic Science: the application of science to criminal and civil laws during a crime investigation. The solving of Carlton Comet's killer used forensic science.
Karyotypes: the number and visual appearance of the chromosomes in an organism. Each suspect's karyotypes were recorded and the chromosomal disorders were studied off each person.
Chromatography: using an alcohol to determine the Rf factor of an ink source. We used this to determine that the pen belonged to Nancy Normal.
DNA Fingerprinting: A technique used to find the links of DNA that are based off size, and match it with family members or crime scenes. This was one process we used to find the fingerprinting on crime scene 1 and 2.
Pedigree: a large family tree that shows all the carriers, affected, and unaffected of inherited diseases. We found the pedigrees of each suspect to find their diseases and how they were all related.
Genotype: genetic makeup of an organism. Having an AA type blood, like Nancy normal did.
Phenotype: physical characteristics of an organism. Having brown eyes or blue eyes.
Polygenic: when something is controlled by two or more genes. Most traits are polygenic, like hair and eye color.
Dominant: the main part of a trait that controls or overrides other genes- if it is preset then the trait is expressed. Brown eyes are dominant over green and blue.
Co dominant: two fully expressed alleles in a gene pair. Striped fur is co dominant in animals.
Incomplete dominance: situation in which one allele is not completely dominant over the other. Animals with a mix of black and white making a grey colored fur.
Recessive: the "weaker" trait that needs two of the same trait to show. Blue eyes are recessive traits.
Alleles: one of a number of different forms of a gene. Alleles are what determine your traits.
Gene: sequences of DNA that codes for a protein that determines a trait. Your genes can code for light brown hair or dark brown hair based off your genetics.
Segregation: separation of alleles during gamete formation. These split and change up your alleles.
Probability: likelihood that a particular event will occur. If both your parents have curly hair, the probability of having straight hair is less likely.
Homozygous: term used to refer to an organism that has two identical alleles for a particular trait. Having a Bb gene set for a certain trait.
Heterozygous: term used to refer to an organism that has two different alleles for the same trait. Having Bg for one allele in eye color.
Karyotypes: the number and visual appearance of the chromosomes in an organism. Each suspect's karyotypes were recorded and the chromosomal disorders were studied off each person.
Chromatography: using an alcohol to determine the Rf factor of an ink source. We used this to determine that the pen belonged to Nancy Normal.
DNA Fingerprinting: A technique used to find the links of DNA that are based off size, and match it with family members or crime scenes. This was one process we used to find the fingerprinting on crime scene 1 and 2.
Pedigree: a large family tree that shows all the carriers, affected, and unaffected of inherited diseases. We found the pedigrees of each suspect to find their diseases and how they were all related.
Genotype: genetic makeup of an organism. Having an AA type blood, like Nancy normal did.
Phenotype: physical characteristics of an organism. Having brown eyes or blue eyes.
Polygenic: when something is controlled by two or more genes. Most traits are polygenic, like hair and eye color.
Dominant: the main part of a trait that controls or overrides other genes- if it is preset then the trait is expressed. Brown eyes are dominant over green and blue.
Co dominant: two fully expressed alleles in a gene pair. Striped fur is co dominant in animals.
Incomplete dominance: situation in which one allele is not completely dominant over the other. Animals with a mix of black and white making a grey colored fur.
Recessive: the "weaker" trait that needs two of the same trait to show. Blue eyes are recessive traits.
Alleles: one of a number of different forms of a gene. Alleles are what determine your traits.
Gene: sequences of DNA that codes for a protein that determines a trait. Your genes can code for light brown hair or dark brown hair based off your genetics.
Segregation: separation of alleles during gamete formation. These split and change up your alleles.
Probability: likelihood that a particular event will occur. If both your parents have curly hair, the probability of having straight hair is less likely.
Homozygous: term used to refer to an organism that has two identical alleles for a particular trait. Having a Bb gene set for a certain trait.
Heterozygous: term used to refer to an organism that has two different alleles for the same trait. Having Bg for one allele in eye color.
Reflection
This project was very interesting because we got to solve a murder. Mystery is always exciting, since you never know who it could be. As much fun as a mystery can be,it was sure hard to solve. There were many pieces of evidence that took a long time to work out. Precise calculations were took in order to match the DNA to each crime scene.
I believe that I could've worked harder on each evidence piece to do it as accurate as possible. In future experiments I will work harder on being as careful and accurate as possible. Another thing I can improve upon is my time management. We were a little rushed in the end, and we were not able to spend enough time on certain areas of the project. Next time I will work harder on working hard in the beginning and the end. I feel like I did really well was leading. I helped progress with my group when we were working and believe I had assisted in putting it all together in the end. Another thing I did well on was cooperation. I never argued with my group and we all worked tremendously together.
I believe that I could've worked harder on each evidence piece to do it as accurate as possible. In future experiments I will work harder on being as careful and accurate as possible. Another thing I can improve upon is my time management. We were a little rushed in the end, and we were not able to spend enough time on certain areas of the project. Next time I will work harder on working hard in the beginning and the end. I feel like I did really well was leading. I helped progress with my group when we were working and believe I had assisted in putting it all together in the end. Another thing I did well on was cooperation. I never argued with my group and we all worked tremendously together.